At the beginning of the movie, as the girls are heading to the bus past all the fans, you hear Mel C say 'What was that you said, Clifford?" but she's in the shot as this is being said and her mouth is clearly not moving.
When the girls are all sitting on Victoria's bed, Emma is holding a stuffed animal. They show her putting her left hand on top of the animal's head, but a second later they do a close up of her and it's her right hand on the head.
When the girls are in the bus on the way to the concert, after they pass a park, they go on the bridge. But if you look out the window on the next shot of Victoria driving, you can see she's still driving past the park.
In the club scene when the Girls are dancing and Nicola is watching them, Emma is holding a drink when they go down on the floor to dance, and then it disappears when she's seen dancing, then the drink reappears, then disappears in the very next shot, reappears, disappears once more, and then she has it again when Nicola starts to go into labor, then Emma hands it to a stranger as they run to get Nicola.
In the concert scene at the Albert Hall, after they finish the song and end it off with each individual pose Victoria's back shot has both hands behind her. However once they go to the front shot her hands are in front with one hand on her hip and the other up high. Once it goes to the back shot again her hands are behind her again.
The girls manager tells Dennis to go to the Royal Albert Hall. The next scene is them going completely the wrong direction but then they miraculously appear at the entrance. They cross Tower Bridge and pass Battersea Power Station, which would mean that they would have to travel right through the center of London to get there.